The Argentinian, who broke up with the model recently, tweeted that splitting with her was the 'most wise decision' of his life.
He wrote: "Back to live! Return to breathe! Always ahead!
"I've taken the most wise decision of my life...!!! Today I'm happy... I'm free...!!!
"Soon will find out the whole truth!"
Earlier this week, an Argentinian magazine quoted him saying: "I left her simply because she is crazy. Katie's brain is not wired right, or the wires don't connect properly.
"I don't know what's wrong with her. I was thinking it over recently and one day decided to pack my bags and leave.
"There was nothing else I could do. She was driving me insane."
But Katie wrote recently on her website: "Accordingly we've mutually decided to call it a day, but we really wish each other nothing but the very best and will remain best of friends, whoever he eventually settles down with will be a very lucky girl."